raphiaura/KytyPS5
1
0
Fork 0
mirror of https://github.com/KytyPS5/KytyPS5.git synced 2026-10-22 20:06:54 +02:00
Code Issues Packages Projects Releases Wiki Activity

kernel: implement POSIX fsync through the shared file API

Browse Source
This commit is contained in:
nmzik
2026-10-18 20:15:53 +02:00
parent 831862a50b
commit 7675579e79
5 changed files with 56 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/KernelFileSystemTests.cpp
+25
View File
@@ -483,6 +483,27 @@ void TestSaveOpenVisibility() {
Check(FileSystem::KernelClose(truncated) == OK, "close truncated save file");
}
void TestFsync() {
Loader::SymbolDatabase symbols;
Libs::InitLibKernel_1(&symbols);
const auto* symbol = symbols.Find(
{"juWbTNM+8hw", "Posix", 1, "libkernel", 1, 1, Loader::SymbolType::Func});
Check(symbol != nullptr, "POSIX fsync export resolves");
const auto fsync = reinterpret_cast<int (KYTY_SYSV_ABI *)(int)>(symbol->vaddr);
Check(fsync(std::numeric_limits<int>::min()) == -1 &&
*Libs::Posix::GetErrorAddr() == Libs::Posix::POSIX_EBADF,
"invalid fsync descriptor reports POSIX EBADF");
constexpr char Path[] = "/savedata0/fsync.dat";
const int fd = FileSystem::KernelOpen(Path, 0x602, 0777);
Check(fd >= 3 && FileSystem::KernelWrite(fd, "save", 4) == 4 && fsync(fd) == OK &&
FileSystem::KernelLseek(fd, 0, 1) == 4,
"fsync flushes a writable file without changing its offset");
Check(FileSystem::KernelClose(fd) == OK && fsync(fd) == -1 &&
*Libs::Posix::GetErrorAddr() == Libs::Posix::POSIX_EBADF,
"closed fsync descriptor reports POSIX EBADF");
}
void TestSaveTruncate() {
namespace Kernel = Libs::LibKernel;
Loader::SymbolDatabase symbols;
@@ -973,6 +994,9 @@ void CheckArchiveMount(const std::filesystem::path &root) {
std::equal(bytes.begin(), bytes.begin() + 9, payload.end() - 9) &&
FileSystem::KernelRead(fd, bytes.data(), bytes.size()) == 0,
"archive reads stop at the member boundary");
Check(FileSystem::KernelFsync(fd) == OK &&
FileSystem::KernelLseek(fd, 0, 1) == payload.size(),
"fsync succeeds on an immutable archive member without changing its offset");
Check(FileSystem::KernelWrite(fd, bytes.data(), 1) ==
Libs::LibKernel::KERNEL_ERROR_EBADF &&
FileSystem::KernelPwrite(fd, bytes.data(), 1, 0) ==
@@ -2271,6 +2295,7 @@ int main(int, char**) {
CheckAprPaths(temporary.Path());
FileSystem::Mount(temporary.Path(), "/savedata0");
TestSaveOpenVisibility();
TestFsync();
TestSaveTruncate();
TestSaveWritev();
TestAioBatches();